I'm running 247{55}21 and it's working for wii based games just fine. I'm not using it as a default slot or anything, but what I've tested with it all worked. Main purpose in using {55} was to test COD black ops with Wii speak. This failed. Cod will not get passed the loading... screen. Did read on other threads COD works well using {57}21. Did not test it myself. Hope this helps =D

I tested CoD:Black Ops (Solo + Online) game with USB Loader GX v2 successfully. I could get Black Ops working with last stable usb loader gx :/ I was forced to use cfg loader to play epic mickey and black ops. But not any more. I

I was using following settings:
Game IOS: 220
002 fix: yes

Disney Epic Mickey + more (new super mario, wii fit plus, super mario galaxy 1 + 2 and so on.) - works with same settings. I have lots of games and it seems that all games i have tested has worked with that Game IOS 220 setting.

sonic colours -> Game Setting: Game IOS 226 - works.

Only thing what I have noticed ... loading times from my hdd is a little bit longer than i have used to.

r21 looks good fow now... need to test more.

CiosX r21 made my day... as I said: No need other loader any more. r21+usbloadergxv2

I have installed cIOS220[58]-rev21.wad and so far, everything is working great except when I plug in the second port, then all my games using cios220 turns into a black screen...any idea why? Btw, I am using usb loader gx 2.0. Thanks in advance!

Don't quote me, but isn't base 58 supposed to enable other usb ports? Typically a black screen means just that, wrong cios or a alt dol is needed. I would suggest try using a different Cios with base 58. Remember this is all testing, your testing it. At this point I wouldn't imagine you'll get many solidified answers being we're in the testing phase. Could also be your loader, try using Wiiflow with your current setup. I'd suggest using CFG but I don't recall it allowing the use of cios 220, wiiflow will.

The reason I wanted base 58 was to get Your Shape to work, but now I have decided to use cIOS220[58]-rev21 for most usb games, I am also using cIOS249[58]-rev21 for Neogamma for Your Shape disk to work. I was having problems loading usb loader gx 2.0 to load at first but then I just changed the base from 249 to 225 and voile everything's working.